Tension device.



W. MAROEOPT.

TENSION DEVICE,

APPLICATION FILED MAY22,1912. "'L'YQAQB Patented Nov. 11, 1913.

2 SHEETS-SHEET 1A 'NVENTO WITNESSES q 7 :ORNETS W. MARGR FT.

TENSION DEVICE.

APPLICATION FILED MAY 22,1912.

STATES PATENT apply resistance to its draft.

w-InLiaM YM ARCRQFT, or PROVIDENCE, nnonn rsrlarcn, 'assienon TO UNIVERSAL ND NG COMPANY, or PORTLAND, MAI3xl'35l,'.-.'-l conroRATIoN or MAINE Tension Davies-Q 'To (:27 10710921, it may concern Be itknown that I, ILLIAM Mxnonoirr,

My invention relates to tension-devicesffor use in applying tension .t-dyarn, thread or the like in delireringthe .same to winding maclnnesor other textile. apparatus.

My improvement relates'particularly to thatclass of devices generally called. ,plate or grid tensions in which the yarn 1s .ar-

ranged to draw between two rid-like plates] adapted to be pressed again t thefyarn to i The object of my improvement. is to provide a tension-grid or plate having aprac tically indestructible bearing surface, capa ble ofresisting the abrasive action of hard twistednthreads and fine sillgand adapted .to prevent Vibration and'chattering'ofgthe grids when the yarn is-drawn'rapidly acro'ss their faces. a

regi ent-i 11 isfully described' in rhealowing specification, illustrated by the at;

company drawings,- in which'z "'Figure .1 is a side elevation of .my in'iproved tension-device showing-the 'gridmembers I "bracket; Fig. 2, anfendelevati'on. of the same, showingthe relation} of the opposed grids and the manner. in which the y'arn draws-between them; Fig 3, a 'perspectlve wvieW of the left-hand grid-plate; Fig; 4, an"- Opposite perspective View of the right-hand plate; Fig. 5, a perspective 'view of one of i 4 0 the gridswhich are supported on the'plates.

' Referring 'to Figs'l and 2, B design'ates'v a bracket havingian arm 6,- which may ,be attached tout-he frame ofxthe Winding or other machine,,'and an upright b 'f formed with horizontally disposed end members or ..lu gs b and 6?. A yertical rod-Bis supported in the lugs b and 5 andon this are hinged the two main ten'sionelements or grid-plates T and T; The plates Tand T are; preferably constructed of sheet-metal and areformed with ears Z; t, t and 5 bent at right-angles to the main portions 'ofthe "plates at 'the' npper and lower extremitiesof' Specification of Letters latent; Application filed May 22, 1912- Serial N0. 699,002.

" metal is folded ov' Patented Nov. 1.1-, 191 3..

their rear edges. Suitable holes t are pro:

aided in the ears to receive the red It on which the plates are supported. 1 v

The plate T is arranged to swing on the ;tension 2? of the plate and screwed 'into the .l] )1.1gl lt 7) of the bracket B, see Fig, l. The vupper ear t of the gr d T extends outward in ttlltlllll i through which this member is operated to swing it toward the fixed menr ber TC. Any suitable arrangement, of

springs or weights may be used to press the hinged plate toward the fixed plate, but I have preferred to show a cord (Z fastened to-the arm t by means of the hole 25 at the end of. the arm and led over a small roll or 4 pulley-79' pivoted at 791.011 the bracket B, see

l and 2. At the opposite end of the jcord a hook '71 engaging a hole at the end of a pm ,0, and secured to the bottom of the piiafis a disk-shaped weight in. Additional weights w can be strung on the pin 0 to iricrease the pressure exerted through the arm t to swing the member T toward themember T;

Secured on the inner 'face s of the plates, T and T are two grid-members G and G'- of the form illustrated in Fig. The grids Gr and'G are preferably constructed of porcelain :glassorsome other similar vitrethread or yarn. Their-inner faces are corru gated or 'fiuted with transverse ribs g and 9, etc. preferably spaced alternately or a1: ranged in a staggered relationwhen the grids are opposed to-each other on the plates Tand T". The grids G and G are secured in'position on the plates in the ingenious m'anner nowdescribed: At the top and bottom edges vof eacl late a portion of the '-ous"-substance to render their bearingfaces impervious 'to the: abrasive action of, the

nd bentfldown close-tof j the main port-ion" to form abutments t i f etc., see Fig. 3. These abutments engage the top and'bottom edges of the grids and hold them inL-position' vertically of the platesg Referring to Fig.- 5. the longitudinal edges g and of the gridsare preferably beveled at acute angles to theirrear faces which lienext to, the inner plane faces of the plates T, T, and means areprovlded-to'lap over and impinge upon these beveled faces to secure the grids in place. These means are as follows: The outer or front cdge'of each plate is formed with a strip or portion of the metal -f0lded over at the same angle as the beveled edge 9 of the grid G and the latter is adapted to lie under this fold. The opposite or rear edge of the grid is held by a wi'reclamp C. "The clamp C isvpreferably formed with a main, bow-shaped portion 2 having two legs 0', '0' bent over 1n the hooked ends 0 0 The ends 0 c are adapted to hook over the rear faces of the plates T, T

and impingeupon the rear beveled edges g of the grids G, G, The bow-shaped portion 0 of the clamp O is then sprung under an ear or projection which is punched out and bent up from the outer face of the plates TandT. i

In applying the grid to the plate the front beveled edge g is simply slid. under the folded, edge 15 and the hooked ends 6 c of the clamp C hooked overthe rear edge of the grid. The bowed portion 0 of the clamp C is then sprung out and under the ear t and thus the grid is clamped snugly in place with its upper and lower edges abutting the folded portions 6 ,6 of the plate T.

The plates T and T are held in'the frame B as previously described and the grids G and G are supported with their corrugated faces opposed to each other'and with the ribs 9 and g alternating. The yarny isf led up between the two grids and draws across their faces with the'hinged grid-G ltending'to press the yarn into the corrugations on the fixed grid JG, formed with a relatively large number of cross-ribs so that the yarn has numerous contacting points along their faces and,

. therefore, it has'been found that it is not necessary to apply extreme pressure to force the movable grid toward the fixed grid to cause resistance to the draft of the yarn. That is to say, since the grids bear upon the yarn at so many points, a considerable resistance will be applied to its draft without the necessity of forcing it totravel in an extremely sinuous course.

Referring to Fig. 2, the yarn is shown as .having an almost straight course between the grids and the very slight sinuoslty The grids are be more constant and uniform, It is also to be noted that the grid member, being solid and constructed of a relatively heavy material, adds considerably to the weight of the tension member and this extra weight tends to increase its stability. In other words, the movable. member possesses conside rable inherent inertia, owing to its increased weight, and this acts to prevent vibration or chattering of the grid, so that the'uniformity of'tension is further enhanced.

My new device not only provides for improved results in tensioning the yarn, but the structure and arrangement of the parts also add greatly to its'durability and, fur

the porcelain should the latter become broken or worn. As before explained, the grids can be easily and readily slipped into and out of position onthe plates by simply adjusting the clamping device, which rea grid becomes worn or broken it is not necessary to replace the whole tension member, but merely the grid itself, the cost of which is comparatively slight.' In addition, the grids being made of glass or porcelain, they will outlast several metal grids or plates and the multiplicity of the bearing their life.

the form and arrangement of 'therparts of the device without departing from the spirit orrscope of the invention; therefore, without limiting myself to the exact'construction shown,.what I claim is 1. In a tension-device, the combination upon the yarn running between them, of rectangular 'gridanembers of vitreous material secured to the inner faces of the tension-plates and arranged to present opposite bearing surfaces to the yarn.

2. In a tension-device, the combination .with two tension-plates arranged to press grid-members constructed of vitreous material and formed with transverse ribs proto secure said tension-plates.

3. In a tension-member for tension-devices, the combination with a plate T having grid G adapted to lie against. the face of the plate with its edges engaged by the folded thereon. i

v .4. In a tension-member for tension-devices, the combination with a plate T having abatnients t", 5", along its top and bottom edgesand a folded strip 6 along its thermore, allow for convenient replacing of points for the yarn still further adds to jecting from their opposed faces and means grids tothe'i'nner faces of the portions folded over along its edges, and a quires but a moments manipulation. When .Various modifications might be made in with two tension-plates arranged to press' upon the yarn runningbetween them, of

portions of the latter'to hold it in position I I new-14s outer edge, of a grid'G adapted to held against the face of the plate with itsupper' and lower edges engaging the abutments t",

1 and its miter edgelying under the strip" t, and means to secure the grid. in position on the-plate.

5. In a tension-member for tensitdmdevices, the combination with a plate T having portions of its top and bottom edges folded over to form abutments 25 29, and a portion if? of its outer edge folded over at an angle gaging the ahutments' t, t and its outer edge lying under the folded portion 15 and to its face', of a grid Gr adapted to be held on the plate with its top and bottom edges ena sprlng clamp arranged to secure the rear edge of the grid to the plate; I I 6.111 a tension-member for -te11sion-de vices, the combination with a plate T,- of-a grid G adapted to be secured to the face of the plate, means engaging the edges of the grid to locate it on'the plate, and a sleep I adapted to hook over the edge oi the plate and impinge npon the edge of the grid;

-7. In a tension-member for .tension-dev vices, the combination with a plate T, of a grid G adapted. to be seemed to theface of the plate, means engaging the edges of the grid to locate it on the plate,'a spring clamp U having portions 0', a, hooked ov r the edge of the plate and 'tei'miiIating i" the.

ends 0 c", overlying the edge of the id and means to secure the clamp to the p te.

-8. In a tension-member for tension-tie vices, thecombination with a plate T having over to form ahutments t, t", a portion t of its outer edge hentnp to form although, and an ear i bent up adjacentethe center of the plate, of a grid G adapted to-loe held against the face of the plate with its top and lower edges engaging the abutments t",

t", and its outer edge lying under the fold t b-and awire ciamp (3 having a bow-shaped portion 0 adapted to hook under the ear I? and two hooked ends '0', 0, arranged to hook portions of its top and bottom edges folded 

